Obsidian and Icelandite Definition

Definition of Obsidian and Icelandite

The general Obsidian and Icelandite definition can be stated as: Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. On the other hand, Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock. Along with definition of Obsidian and Icelandite, get to know about Properties of Obsidian and Icelandite. Get to know more information about Obsidian and Icelandite origin and discoverer, etymology and class.

History of Obsidian and Icelandite

The history of Obsidian and Icelandite gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Obsidian and Icelandite Origin and Discoverer

Obsidian and Icelandite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Obsidian and Icelandite. In this section, you will know about Obsidian and Icelandite Origin and Discoverer. Origin of Obsidian is Ethiopia whereas Origin of Icelandite is Iceland. It is interesting to know the name of Obsidian and Icelandite discoverer. The Discoverer of Obsidian is Obsius and the discoverer of Icelandite is Ian S. E. Carmichael.

Etymology of Obsidian and Icelandite

Along with Obsidian and Icelandite definition, know more about the etymology of Obsidian and Icelandite. Etymology of Obsidian and Icelandite gives information about origin and formation of a particular rock. Know more about Formation of Obsidian and Formation of Icelandite. The etymology of Obsidian is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius while that of Icelandite is From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Obsidian and Icelandite belong to Igneous Rocks. The sub-class, group and other categories of Obsidian and Icelandite are listed below.

For Obsidian,

• Sub-class: Durable Rock and Medium Hardness Rock
• Group: Volcanic
• Other Categories: Opaque rock

For Icelandite,

• Sub-class: Durable Rock and Hard Rock
• Group: Volcanic
• Other Categories: Fine grained rock and Opaque rock